Help with code from book

boro · May 19th, 2008, 04:20 AM

Please help my find error in code.

Create file in App_Code: Helpers.cs

Code:

using System.Web;
using System.IO;
using System.Web.Caching;

namespace MB.TheBeerHouse
{
    public static class Helpers
    {
        public static string[] GetThemes()
        {
            if (HttpContext.Current.Cache["SiteThemes"] != null)
            {
                return (string[])HttpContext.Current.Cache["SiteThemes"];
            }
            else
            {
                string themesDirPath = HttpContext.Current.Server.MapPath("~/App_Themes");
                string[] themes = Directory.GetDirectories(themesDirPath);
                for (int i = 0; i <= themes.Length - 1; i++)
                    themes[i] = Path.GetFileName(themes[i]);
                CacheDependency dep = new CacheDependency(themesDirPath);
                HttpContext.Current.Cache.Insert("SiteThemes", themes, dep);
                return themes;
            }
        }
    }
}

try use GetTheme() method in ThemeSelector.ascx.cs

Code:

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using MB.TheBeerHouse;

public partial class ThemeSelector : System.Web.UI.UserControl
{
    protected void Page_Load(object sender, EventArgs e)
    {
        ddlThemes.DataSource = Helpers.GetTheme();
    }
}

but get error.

Please help my fixed this error.

jimibt · May 19th, 2008, 05:04 AM

boro - it's all in a name :D. in your definition, you have:

ddlThemes.DataSource = Helpers.GetTheme();

try using:

ddlThemes.DataSource = Helpers.GetThemes();

as this is how you've defined the method in the helpers.cs class. hope this works.

jimi

http://www.originaltalent.com

Mike1298 · March 12th, 2009, 11:28 PM

This solution may come a little too late for âboroâ but some other people may find it useful. In VS 2005, App_Code is a directory with funny characteristics. I found the solution in https://forums.asp.net/ (suggested by bpeterson) and I searched for âApp_code namespace errorâ. Of course, one must spell all the names correctly (uppercase/ lowercase in C#) and the rest. Moreover, in VS 2005, when you create a class file in App_Code directory, by default, its âBuild Actionâ property is marked as âContentâ. You must click on the filename (in this case Helpers.cs) then in the properties window (usually located below the solution explorer window), find âBuild Actionâ property which itself is grouped under âAdvancedâ. Next set the âBuild Actionâ property to âCompileâ. In my case, I had to copy the file to another file. Delete the offending file. Recreated it in App_Code directory. Then set its âBuild Actionâ property to âcompileâ. I hope this is helpful.

Mike1298